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Ford PM, White C, Kaufmann H, MacTavish J, Pearson M, Ford S, Mistry PS, Connop P. Seroprevalence of hepatitis C in a Canadian federal penitentiary for women. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 1995; 21:132-4. [PMID: 7670432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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77
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Gray IC, Nobile C, Muresu R, Ford S, Spurr NK. A 2.4-megabase physical map spanning the CYP2C gene cluster on chromosome 10q24. Genomics 1995; 28:328-32. [PMID: 8530044 DOI: 10.1006/geno.1995.1149] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The CYP2C gene cluster on chromosome 10q24 encodes the P450IIC enzymes, members of the cytochrome P450 monooxygenase superfamily. The P450-IIC enzymes are required for the metabolism of a number of foreign compounds, including the drugs mephenytoin and tolbutamide, and are also thought to be involved in the metabolism of endogenous steroid hormones. Several different CYP2C cDNA clones have been isolated; however, the exact number of genes and the genomic arrangement of the CYP2C cluster have remained unknown. Using a combination of STS and restriction mapping to characterize YAC clones, we have constructed a 2.4-Mb physical map that incorporates the CYP2C gene cluster. The cluster spans approximately 500 kb on proximal 10q24 and comprises four genes arranged in the order CYP2C8-CYP2C9-CYP2C19-CYP2C18. The map also includes an adjacent gene, the serum retinol binding protein gene (RBP4). The incorporation of Généthon CA repeat genetic markers suggests the orientation of the loci to be Cen-RBP4-CYP2C18-CYP2C19-CYP2C9-CYP2C8-Tel .
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Sheppard MI, Stephenson M, Thomas DA, Reid JA, Thibault DH, Lacroix M, Ford S. Aquatic-terrestrial partitioning of deep groundwater discharge using measured helium fluxes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 1995; 29:1713-1721. [PMID: 22176440 DOI: 10.1021/es00007a004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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79
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Ford S, Jones K. Integrating pharmacy fully into the primary care team. BMJ (CLINICAL RESEARCH ED.) 1995; 310:1620-1. [PMID: 7795438 PMCID: PMC2550006 DOI: 10.1136/bmj.310.6995.1620] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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80
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Ford S. Geographical relations between patients and general practitioners. BMJ (CLINICAL RESEARCH ED.) 1995; 310:1072. [PMID: 7728085 PMCID: PMC2549468 DOI: 10.1136/bmj.310.6986.1072b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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81
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McHugh P, Lewis S, Ford S, Newlands E, Rustin G, Coombes C, Smith D, O'Reilly S, Fallowfield L. The efficacy of audiotapes in promoting psychological well-being in cancer patients: a randomised, controlled trial. Br J Cancer 1995; 71:388-92. [PMID: 7841058 PMCID: PMC2033600 DOI: 10.1038/bjc.1995.79] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Open or uncontrolled studies have suggested that providing cancer patients with audiotapes of their clinical interviews can improve information recall and reduce psychological distress. We tested these hypotheses in a 'clinician-blind', prospective, randomised controlled trial. A total of 117 patients newly referred to a medical oncology clinic who were to be given 'bad news' had their consultations audiotaped. Blind to the clinician, patients were randomly allocated to receive a copy of the tape to play at home or not (control group). At 6 months follow-up, tape group patients reported positive attitudes to the audiotape and were shown to recall significantly more information about their illness than did controls. Overall improvement in psychological distress at 1 and 6 months follow-up, as measured with the 30-item General Health Questionnaire and the Hospital Anxiety and Depression Scale was no different in the two groups. However, a second-order interaction suggested that poor-prognosis patients were disadvantaged specifically by access to the audiotape, with less improvement in psychological distress at 6 months follow-up than non-tape controls. Patient access to audiotapes of clinical interviews promotes factual retention but does not reliably reduce psychological distress and may be actively unhelpful in some subgroups of patients.
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Abstract
Over the last 10 yr, research has shown that although the majority of patients are able to cope with the stresses of cancer, a substantial number have difficulties which require some form of psychological help. This study reports on the levels of psychological distress in a heterogeneous group of 117 newly referred out-patients with cancer over a 6-month period. Each patient reported their levels of distress by completing two self-administered questionnaires (the GHQ-30 and HADS) on three separate occasions. A descriptive examination of the socio-demographic characteristics of the sample was also carried out. At the first assessment 30% of the sample scored above the threshold for probable psychiatric disorder on the GHQ-30 and 26% on the HADS anxiety scale. At 6 months follow-up levels had fallen to 21% for the GHQ-30 and 10% for HADS anxiety. The numbers of probable cases of HADS depression was 7% at the first assessment and 5% at follow-up. Differences in levels of psychological morbidity according to age, sex, partner status and socioeconomic group were demonstrated. However, we were unable to make any firm conclusions as to whether these effects were independent of each other as a controlled multivariate analysis of the data set was not possible.
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83
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84
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Ford S. Community pharmacy. Br J Gen Pract 1994; 44:534-5. [PMID: 7748658 PMCID: PMC1239059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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85
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Ford S, Fallowfield L, Lewis S. Can oncologists detect distress in their out-patients and how satisfied are they with their performance during bad news consultations? Br J Cancer 1994; 70:767-70. [PMID: 7917937 PMCID: PMC2033394 DOI: 10.1038/bjc.1994.393] [Citation(s) in RCA: 165] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Recognition of psychological distress in patients with cancer, some of which can be ameliorated with appropriate intervention, is a crucial aspect of patient care. Previous studies, with the exception of one, indicate that oncologists often fail to detect general distress and do not identify those patients with significant psychological disorder. As approximately 25-30% of patients experience anxiety and/or depression severe enough to merit psychological intervention, this is a serious problem. This study assessed the ability of five oncologists to recognise distress in newly referred out-patients who were receiving bad news. Self-report measures of the oncologists' satisfaction with their performance during the bad news interviews were also collected. Each patient had two clinical interviews in which information concerning diagnosis and treatment were given. Prior to each interview patients reported their own levels of distress by completing two self-report questionnaires. These were correlated with the ratings of distress and satisfaction made by each clinician on a visual analogue scale after each interview. Only one oncologist's ratings consistently correlated with patients' self-reported scores. The clinicians tended to under-rate the distress in their patients and were mostly satisfied with their performances during each interview. The ability to detect distress varied between each clinician and confirmed the conclusions of past studies that oncologists would benefit from up-grading their psychological assessment skills.
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86
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Baroody FM, Ford S, Lichtenstein LM, Kagey-Sobotka A, Naclerio RM. Physiologic responses and histamine release after nasal antigen challenge. Effect of atropine. Am J Respir Crit Care Med 1994; 149:1457-65. [PMID: 7516250 DOI: 10.1164/ajrccm.149.6.7516250] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
We enrolled nine allergic subjects in a double blind, placebo-controlled study to examine the effect of premedication with 0.6 mg of atropine on nasal antigen challenge. The challenge consisted of unilaterally stimulating the nasal septum with diluent followed by three increasing doses of antigen and recording responses bilaterally. Sneezes, symptoms, and nasal airway resistance (NAR) were recorded. Secretions were collected using preweighed filter paper discs and histamine was measured. Antigen challenge with the subjects on placebo led to significant dose-dependent increases in sneezes, symptom scores, ipsilateral and contralateral secretion weights, ipsilateral NAR, and total amount of ipsilateral histamine (p < 0.05 versus diluent). Bilaterally applied atropine led to significant inhibition of ipsilateral and contralateral nasal secretions as well as rhinorrhea scores (p < 0.05 versus placebo) but had no significant effect on other parameters. Challenge after atropine premedication led to higher increases in histamine concentration than placebo (p < 0.01). These results suggest that parasympathetically stimulated fluids did not contain histamine and diluted the histamine released by mast cells. To support this hypothesis, we challenged the same subjects with methacholine. The concentration of histamine decreased and was significantly lower than after challenge with antigen (p < 0.01). The data suggest that: (1) histamine is released locally at the site of antigen challenge, (2) the volume of glandular secretions is primarily controlled by parasympathetic stimulation, and (3) the total amount of a mediator recovered in a fixed time interval best reflects the underlying pathophysiologic events.
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Schiefelbein J, Galway M, Masucci J, Ford S. Pollen tube and root-hair tip growth is disrupted in a mutant of Arabidopsis thaliana. PLANT PHYSIOLOGY 1993; 103:979-85. [PMID: 8022944 PMCID: PMC159072 DOI: 10.1104/pp.103.3.979] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The expansion of both root hairs and pollen tubes occurs by a process known as tip growth. In this report, an Arabidopsis thaliana mutant (tip1) is described that displays defects in both root-hair and pollen-tube growth. The root hairs of the tip1 mutant plants are shorter than those of the wild-type plants and branched at their base. The tip1 pollen-tube growth defect was identified by the aberrant segregation ratio of phenotypically normal to mutant seeds in siliques from self-pollinated, heterozygous plants. Homozygous mutant seeds are not randomly distributed in the siliques, comprising only 14.4% of the total seeds, 5.3% of the seeds from the bottom half, and 2.2% of the seeds from the bottom quarter of the heterozygous siliques. Studies of pollen-tube growth in vivo showed that mutant pollen tubes grow more slowly than wild-type pollen through the transmitting tissue of wild-type flowers. Cosegregation studies indicate that the root-hair and pollen-tube defects are caused by the same genetic lesion. Based on these findings, the TIP1 gene is likely to encode a product involved in a fundamental aspect of tip growth in plant cells.
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Munoz E, Lonquist JL, Radovancevic B, Baldwin RT, Ford S, Duncan JM, Frazier OH. Long-term results in diabetic patients undergoing heart transplantation. J Heart Lung Transplant 1992; 11:943-9. [PMID: 1420243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We conducted a retrospective study of 305 nondiabetic patients and 37 diabetic patients who underwent heart transplantation from July 1982 to May 1990. Actuarial survival was similar for both groups of patients at 1 year (76.4% versus 81.3%) and at 2 years (69.6% versus 73.0%). Because we were interested in long-term results, we further analyzed only those patients surviving more than 1 year after transplantation (214 nondiabetic patients and 29 diabetic patients). Mean follow-up for the nondiabetic patients was 31.8 +/- 16.2 months and for the diabetic patients, 32.9 +/- 4.1 months. The respective mean age in each group was 50.4 +/- 10.3 years and 51.6 +/- 9.1 years. No difference was observed between the nondiabetic patients and diabetic patients regarding the rejection rate per patient-month (0.040 +/- 0.041 versus 0.045 +/- 0.051 episodes per patient-month), the infection rate per patient-month (0.056 +/- 0.081 versus 0.081 +/- 0.102 episodes per patient-month), or renal function as evidenced by mean creatinine levels at 1, 2, and 3 years. Twelve patients were insulin-dependent before transplantation; and 1 year after transplantation, they required an insulin dose 2.12 times greater than the dose before operation. Coronary artery disease developed in 32.8% of the nondiabetic patients, compared with 31.0% of the diabetic patients by the fourth year of follow-up. Despite the need for increased insulin doses, the diabetic patients had similar long-term survival to that of the nondiabetic patients, without an increased risk of rejection, infection, renal dysfunction, or coronary artery disease. Our experience supports the feasibility of heart transplantation in selected diabetic recipients.
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Davis TM, Suputtamongkol Y, Spencer JL, Ford S, Chienkul N, Schulenburg WE, White NJ. Measures of capillary permeability in acute falciparum malaria: relation to severity of infection and treatment. Clin Infect Dis 1992; 15:256-66. [PMID: 1520760 DOI: 10.1093/clinids/15.2.256] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Capillary permeability was investigated in 32 Thai patients aged 14-49 years who had acute falciparum malaria with use of three distinct techniques: quantitation of the urinary albumin/creatinine ratio (ACR), estimation of the transcapillary escape rate of radiolabeled albumin (TER), and retinal photography/fluorescein angiography. Fourteen patients had uncomplicated infections and 18 were severe cases. The severely ill patients had significantly higher ACRs (median, 4.8 mg/mmol; 95% confidence limits, 2.4-19.9 mg/mmol) and TERs (median, 8.3%/h; 95% confidence limits, 6.2-13.2%/h) than the uncomplicated cases (ACR: median, 2.1 mg/mmol; 95% confidence limits, 6.2-13.2%/h) than the uncomplicated cases (ACR: median, 2.1 mg/mmol; 95% confidence limits, 1.0-8.8 mg/mmol; TER: median, 5.9%/h; 95% confidence limits, 3.8-10.6%/h; P = .014 and .042). Both variables were significantly associated with biochemical indices of disease severity including total serum bilirubin levels (rs greater than or equal to 0.398, P less than .025 in each case), but there were no significant differences between ACRs and TERs among comatose and noncomatose patients with severe infections (P greater than or equal to .08). Retinopathy (hemorrhages, cotton-wool spots, capillary nonperfusion, and/or extravasation of fluorescein) was found in eight severely ill patients and in two uncomplicated cases. Fluorescein leakage was evident in six patients. Although fluorescein leakage had the strongest parametric correlation with the presence of coma relative to both ACR and TER in the full patient series (r = 0.58, P less than .01), multiple linear regression analysis indicated that concentrations of plasma lactate (t = 2.998, P = .006) and serum creatinine (t = 2.200, P = .036) were the factors responsible for this association. These data do not support a role for tissue edema in the pathogenesis of cerebral malaria but reveal an association between markers of disease severity and a generalized increase in systemic capillary permeability.
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Rieckenberg RM, Sanfilippo AJ, Ford S. Early neonatal death due to an unusual pattern of total anomalous pulmonary venous drainage. Can J Cardiol 1992; 8:396-8. [PMID: 1617522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Total anomalous pulmonary venous drainage (TAPVD) is an uncommon congenital cardiovascular anomaly caused by failure of the common pulmonary vein to develop a connection with the common atrium in early ontogeny, resulting in persisting connections between pulmonary and systemic venous systems and a left-to-right shunt. This usually occurs via a single, enlarged, well-defined venous channel. The authors present an unusual case of TAPVD with venous obstruction with a profusely arborizing plexus of veins arising from the common pulmonary vein and forming multiple tiny anastomoses with the systemic venous system. This plexus may represent the persistence of an earlier, less involuted embryological form of the primitive pulmonary splanchnic plexus than those found in previously described patterns of TAPVD.
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91
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Ford S. Modular contracts for general practitioners. BMJ (CLINICAL RESEARCH ED.) 1992; 304:1115-6. [PMID: 1586836 PMCID: PMC1881925 DOI: 10.1136/bmj.304.6834.1115-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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92
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Ford S. Changing to dry powder inhalation systems. BMJ (CLINICAL RESEARCH ED.) 1992; 304:781. [PMID: 1571705 PMCID: PMC1881585 DOI: 10.1136/bmj.304.6829.781-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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93
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Anderson DC, Bottini AG, Jagiella WM, Westphal B, Ford S, Rockswold GL, Loewenson RB. A pilot study of hyperbaric oxygen in the treatment of human stroke. Stroke 1991; 22:1137-42. [PMID: 1926256 DOI: 10.1161/01.str.22.9.1137] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We administered hyperbaric oxygen or air in a double-blind prospective protocol to 39 patients with ischemic cerebral infarction. We interrupted the study when we noticed what appeared to be a trend favoring the air-treated patients, whose neurological deficits were less severe (mean +/- SEM score on graded neurological examination: air, 25.6 +/- 4.9; oxygen, 34.5 +/- 7.5) and whose infarcts were smaller (air, 29.0 +/- 12.2 cm3; oxygen, 49.2 +/- 11.7 cm3) at 4 months. The trend, we decided, was probably an artifact of the randomization process. Nevertheless, we chose not to resume the trial because the treatment was difficult to administer by schedule (for various reasons the treatment protocol was broken in 15 of the 39 patients), was poorly tolerated (eight of the 39 patients refused to continue treatments), and did not produce dramatic improvement.
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Snyder A, Rosenberg G, Weiss W, Pierce W, Pae W, Marlotte J, Nazarian R, Ford S. A completely implantable total artificial heart system. ASAIO TRANSACTIONS 1991; 37:M237-8. [PMID: 1751126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The authors developed, built, and tested in vivo a completely implanted total artificial heart (TAH) system. The system used a reduced size version of a roller screw energy converter and mating sac blood pumps. The motor drive, pumps, and a compliance chamber were implanted intrathoracically. A canister containing controlling electronics and an emergency battery was implanted in the abdomen. The secondary coil of an inductive energy transmission and telemetry system was placed over the ribs. The system was implanted in three calves, that survived 0.5-13 days with the system. The system maintained safe left atrial pressures and adequate cardiac outputs during each animal's entire course.
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Baldwin RT, Radovancevic B, Duncan JM, Ford S, Lonquist JL, Munoz E, Abou-Awdi NL, Frazier OH. Quality of life in long-term survivors of the Hemopump left ventricular assist device. ASAIO TRANSACTIONS 1991; 37:M422-3. [PMID: 1751218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The courses of 10 patients (nine men and one woman; mean age, 54 years) were reviewed to determine the long-term results of treatment with the Hemopump (Nimbus Medical, Inc., Rancho Cordova, CA) left ventricular assist device. Indications for treatment were postcardiotomy cardiogenic shock (n = 8) and acute cardiac allograft rejection (n = 2). Two of the patients with postcardiotomy shock required a bridge to transplantation. At follow-up (mean, 21 months), eight patients were alive: four were in New York Heart Association Functional Class I and four were in Class II. None had long-term adverse effects that were attributable to the site of insertion (e.g., limb ischemia or infected groin wounds). All the patients considered themselves independent in their daily activities, and most of the patients were able to exercise and pursue hobbies. The Hemopump appears to offer long-term survival with an acceptable quality of life to a population of patients whose survival would have been highly unlikely otherwise.
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97
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Lillicrap DP, Pinto M, Benford K, Ford PM, Ford S. Heterogeneity of laboratory test results for antiphospholipid antibodies in patients treated with chlorpromazine and other phenothiazines. Am J Clin Pathol 1990; 93:771-5. [PMID: 1971739 DOI: 10.1093/ajcp/93.6.771] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Ninety-seven psychiatric patients who have been treated with the antipsychotic drug chlorpromazine or another phenothiazine have been investigated for the presence of antiphospholipid antibodies. A variety of coagulation studies and specific antiphospholipid immunoassays were performed to define the spectrum of antigen specificity of these antibodies. Coagulation studies showed an increasing sensitivity for the lupus anticoagulant with reagents of differing phospholipid content. Prolonged activated partial thromboplastin times (APTTs) were found in five patients with the use of an insensitive APTT reagent and in 14 patients with a lower phospholipid content reagent. In every case, attempted correction of the clotting time with normal plasma was unsuccessful. Twenty-one patients had abnormal kaolin clotting time profiles. In seven of these patients, test results with both APTT reagents had been normal. Antibody reactivity was tested against three negatively charged phospholipids, phosphatidyl-serine, cardiolipin, and phosphatidylinositol. Only five patients demonstrated reactivity against phosphatidylinositol, whereas high antibody titers were observed in 28 patients against one or both of phosphatidylserine and cardiolipin. Twenty-three of these patients were found to have elevated anticardiolipin-specific IgM antibodies. Overall, 41 of the patients had at least one laboratory abnormality suggestive of antiphospholipid antibody activity. Seven of the 26 patients, taking phenothiazines other than chlorpromazine, had positive test results for antiphospholipid antibodies. No clinical thromboembolic events were recorded in any patient. These findings demonstrate the heterogeneity of antiphospholipid antibody specificity induced in patients treated with various phenothiazine drugs and indicate that none of these patterns of reactivity marks a predisposition for thromboembolism in this population.
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98
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Ford S. The community pharmacist. THE JOURNAL OF THE ROYAL COLLEGE OF GENERAL PRACTITIONERS 1989; 39:348-9. [PMID: 2556571 PMCID: PMC1711987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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99
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Ford S, Cooper RA, Evans RW, Hider RC, Williams PH. Domain preference in iron removal from human transferrin by the bacterial siderophores aerobactin and enterochelin. EUROPEAN JOURNAL OF BIOCHEMISTRY 1988; 178:477-81. [PMID: 2974803 DOI: 10.1111/j.1432-1033.1988.tb14473.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The ability of the siderophores aerobactin and enterochelin to remove iron from transferrin is reported. Aerobactin removes iron from both high-affinity sites on the transferrin molecule, but shows a marked preference for the C-terminal site. This preference is different to that of many iron chelators. Enterochelin removes iron perferentially from the N-terminal site. No evidence for synergism between aerobactin and bidentate ligands could be detected.
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100
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Bivins HG, Ford S, Bezmalinovic Z, Price HM, Williams JL. The effect of axial traction during orotracheal intubation of the trauma victim with an unstable cervical spine. Ann Emerg Med 1988; 17:25-9. [PMID: 3337410 DOI: 10.1016/s0196-0644(88)80498-0] [Citation(s) in RCA: 108] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Axial (in-line) traction is recommended as a stabilizing maneuver during orotracheal intubation of a trauma victim with a potential cervical spine injury. There are no published data demonstrating the safety of this technique in trauma patients with an unstable cervical spine. In our study, 17 victims of blunt traumatic arrest had radiographic analysis of the cervical spine during orotracheal intubation, with and without axial traction. Four (24%) had unstable injuries, which included a C6-7 fracture dislocation, a Hangman's fracture, and two atlanto-occipital dislocations. Axial traction during oral intubation in these victims resulted in a mean distraction at the fracture site of 7.75 mm. Axial traction produced 4 mm of posterior subluxation in the C6-7 fracture dislocation, demonstrating that axial traction alone may result in subluxation, as well as distraction. This depends on the direction of the traction force and integrity of surrounding tissues. We recommend that trauma patients requiring intubation prior to a complete examination and radiographic analysis of the cervical spine be nasotracheally intubated without axial traction, and that the head and neck be stabilized in the neutral position. If a contraindication to nasotracheal intubation exists, a cricothyroidotomy should be performed.
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